CAS vs. USO

Last updated Jun 24, 2026

CAS (Simplify China A Shares PLUS Income ETF) and USO (United States Oil Fund LP) are both exchange-traded funds - CAS is a China Equities fund actively managed by Simplify, while USO is a Oil & Gas fund tracking the Front Month Light Sweet Crude Oil. CAS is actively managed, while USO is passively managed. At a correlation of -0.41, they often move in opposite directions. CAS charges 0.88%/yr vs 0.86%/yr for USO.

Performance

CAS vs. USO - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Simplify China A Shares PLUS Income ETF (CAS) and United States Oil Fund LP (USO). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

CAS

• 1D: -2.90%
• 1M: —
• YTD: —
• 6M: —
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

USO

• 1D: -1.27%
• 1M: -21.05%
• YTD: 60.87%
• 6M: 58.26%
• 1Y: 45.61%
• 3Y*: 21.25%
• 5Y*: 17.42%
• 10Y*: 2.01%

*Multi-year figures are annualized to reflect compound growth (CAGR)

CAS vs. USO - Yearly Performance Comparison

	2026 (YTD)
CAS Simplify China A Shares PLUS Income ETF	0.48%
USO United States Oil Fund LP	-15.09%

Correlation

The correlation between CAS and USO is -0.41, meaning they tend to move in opposite directions. This is especially valuable for risk management - when one declines, the other has historically tended to hold steady or rise.

	Correlation
Correlation (All Time) Calculated using the full available price history since May 28, 2026	-0.41

Return for Risk

CAS vs. USO — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.

CAS

Risk / return metrics aren't available yet — we need at least 12 months of trading data to calculate them.

USO

USO Risk / Return Rank: 32
USO Sharpe Ratio Rank: 30
USO Sortino Ratio Rank: 33
USO Omega Ratio Rank: 32
USO Calmar Ratio Rank: 35
USO Martin Ratio Rank: 32

The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

CAS vs. USO - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Simplify China A Shares PLUS Income ETF (CAS) and United States Oil Fund LP (USO). Risk-adjusted metrics are performance indicators that assess an investment's returns in relation to its risk, enabling a more accurate comparison of different investment options.

Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.

	CAS	USO	Difference
Sharpe ratio: Return per unit of total volatility	—	1.05	—
Sortino ratio: Return per unit of downside risk	—	1.68	—
Omega ratio: Gain probability vs. loss probability	—	1.21	—
Calmar ratio: Return relative to maximum drawdown	—	1.68	—
Martin ratio: Return relative to average drawdown	—	4.57	—

Drawdowns

CAS vs. USO - Drawdown Comparison

The maximum CAS drawdown since its inception was -6.84%, smaller than the maximum USO drawdown of -98.19%. Use the drawdown chart below to compare losses from any high point for CAS and USO.

Drawdown Indicators

	CAS	USO	Difference
Max Drawdown Largest peak-to-trough decline	-6.84%	-98.19%	+91.35%
Max Drawdown (1Y) Largest decline over 1 year	—	-27.26%	—
Max Drawdown (3Y) Largest decline over 3 years	—	-27.26%	—
Max Drawdown (5Y) Largest decline over 5 years	—	-36.23%	—
Max Drawdown (10Y) Largest decline over 10 years	—	-86.75%	—
Current Drawdown Current decline from peak	-2.90%	-88.16%	+85.26%
Average Drawdown Average peak-to-trough decline	-2.67%	-75.31%	+72.64%
Ulcer Index Depth and duration of drawdowns from previous peaks	—	10.02%	—

Volatility

Volatility by Period

	CAS	USO	Difference
Volatility (1M) Calculated over the trailing 1-month period	—	11.79%	—
Volatility (6M) Calculated over the trailing 6-month period	—	39.34%	—
Volatility (1Y) Calculated over the trailing 1-year period	28.91%	44.35%	-15.44%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	28.91%	36.32%	-7.41%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	28.91%	39.02%	-10.11%

CAS vs. USO - Expense Ratio Comparison

CAS has a 0.88% expense ratio, which is higher than USO's 0.86% expense ratio.

Dividends

CAS vs. USO - Dividend Comparison

Neither CAS nor USO has paid dividends to shareholders.

Tickers have no history of dividend payments

Frequently Asked Questions

Can I hold both CAS and USO in my portfolio?

CAS and USO have a correlation of -0.41, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, CAS or USO?

On fees, USO is cheaper at 0.86% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, CAS or USO?

USO is cheaper with a 0.86% expense ratio, compared with 0.88% for CAS.

Which ETF pays a higher dividend yield, CAS or USO?

CAS and USO have nearly identical dividend yields, around 0.00%.

What is the main difference between CAS and USO?

CAS is categorized as China Equities, while USO is Oil & Gas. They also come from different issuers: Simplify and USCF. Their fees differ too: 0.88% for CAS and 0.86% for USO.